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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 72 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.1.27 ÷ 10 =
  2. 2.492.5 ÷ 10 =
  3. 3.348.9 × 10 =
  4. 4.472.8 × 1000 =
  5. 5.420.6 × 100 =
  6. 6.29.85 ÷ 10 =
  7. 7.25.84 × 10 =
  8. 8.127.6 × 100 =
  9. 9.10.97 × 100 =
  10. 10.11.18 × 1000 =
  11. 11.40.65 × 1000 =
  12. 12.469.4 × 10 =
  13. 13.11.14 × 100 =
  14. 14.158.5 ÷ 1000 =
  15. 15.184.5 ÷ 100 =
  16. 16.37.57 × 1000 =
  17. 17.223.9 ÷ 100 =
  18. 18.34.58 ÷ 10 =
  19. 19.348.6 ÷ 100 =
  20. 20.159.3 × 1000 =
  21. 21.211.4 ÷ 10 =
  22. 22.2.16 × 10 =
  23. 23.21.64 ÷ 10 =
  24. 24.61.5 × 1000 =
  25. 25.17.64 ÷ 100 =
  26. 26.331.2 ÷ 10 =
  27. 27.253.9 ÷ 10 =
  28. 28.31.81 ÷ 100 =
  29. 29.3.64 × 1000 =
  30. 30.154.4 ÷ 1000 =
  31. 31.244.2 × 10 =
  32. 32.169.5 ÷ 1000 =
  33. 33.11.21 × 100 =
  34. 34.14.09 × 10 =
  35. 35.370.4 × 1000 =
  36. 36.370.3 × 100 =
  37. 37.207.8 ÷ 100 =
  38. 38.275.3 ÷ 10 =
  39. 39.44.28 × 1000 =
  40. 40.15.78 × 100 =

Answer key

  1. 0.127
  2. 49.25
  3. 3489
  4. 472800
  5. 42060
  6. 2.985
  7. 258.4
  8. 12760
  9. 1097
  10. 11180
  11. 40650
  12. 4694
  13. 1114
  14. 0.1585
  15. 1.845
  16. 37570
  17. 2.239
  18. 3.458
  19. 3.486
  20. 159300
  21. 21.14
  22. 21.6
  23. 2.164
  24. 61500
  25. 0.1764
  26. 33.12
  27. 25.39
  28. 0.3181
  29. 3640
  30. 0.1544
  31. 2442
  32. 0.1695
  33. 1121
  34. 140.9
  35. 370400
  36. 37030
  37. 2.078
  38. 27.53
  39. 44280
  40. 1578

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